nRF9160 GPS ANT Design

[distancetu]

Please help me point out whether the antenna design is reasonable,I can't get a GPS signal this way

[ketiljo]

Have the GPS antenna been measured and tuned?

[distancetu]

There was no problem with the tests we ran,and We can use other GPS positioning modules to use this antenna can be fixed in place, not with the 9160.

[ketiljo]

What's the part number of the antenna? The tuning components do not have any values. 

Can you share the layout?

[distancetu]

ANT_GPS1 is the number of the antenna.

We can obtain satisfactory performance without adjusting the matching value when we debug the antenna.

We have not welded any of the NC devices marked in the fourth picture

[ketiljo]

Are you sure the LNA is enabled? Pin 5 must be high to enable the LNA. What does the debug log tell you?